<template>
  <div class="search">
    <!-- 搜索区 -->
    <div class="search-box-wrapper">
      <search-box ref="searchBox" @query="onQueryChange"></search-box>
    </div>
    <!--  推荐搜索  -->
    <div class="shortcut-wrapper" v-show="!query">
      <scroll class="shortcut" :data="shortcut" ref="shortcut">
        <!-- 热门 -->
        <div class="hot-key">
          <h1 class="title">热门搜索</h1>
          <ul>
            <li
              @click="addQuery(item.first)"
              class="item"
              v-for="(item, index) in hots"
              :key="index"
            >
              <span>{{item.first}}</span>
            </li>
          </ul>
        </div>
        <!--历史 -->
        <div class="search-history" v-show="searchHistory.length">
          <h1 class="title">
            <span class="text">搜索历史</span>
            <span class="clear" @click="showConfirm">
              <i class="fa fa-trash"></i>
            </span>
          </h1>
          <search-list @select="addQuery" @delete="deleteOne" :searches="searchHistory"></search-list>
        </div>
      </scroll>
    </div>
    <!-- 搜索结果 -->
    <div class="search-result" v-show="query">
      <suggest :query="query" @listScroll="blurInput" @select="saveSearch"></suggest>
    </div>

    <confirm ref="confirm" text="是否清空搜索历史数据" confirBtnText="清空" @confirm="deleteAll"></confirm>

    <router-view></router-view>
  </div>
</template>

<script>
import SearchBox from 'components/search-box/search-box'
import axios from 'axios'
import Suggest from 'components/suggest/suggest'
import { mapActions, mapGetters } from 'vuex'
import SearchList from 'components/search-list/search-list'
import Confirm from 'components/base/confirm'
import Scroll from 'components/base/scroll'
export default {
  data() {
    return {
      // 热门搜索数据
      hots: [],
      query: ''
    }
  },
  created() {
    // 请求热门搜索数据
    this._getHotKey()
  },
  components: {
    SearchBox,
    Suggest,
    SearchList,
    Confirm,
    Scroll
  },
  computed: {
    ...mapGetters(['searchHistory']),
    shortcut() {
      return this.hots.concat(this.searchHistory)
    }
  },
  watch: {
    query(newquery) {
      if (!newquery) {
        setTimeout(() => {
          this.$refs.shortcut.refresh()
        }, 20)
      }
    }
  },
  methods: {
    ...mapActions(['saveSearchHistory', 'deleteSearchHistory', 'clearSearchHistory']),
    _getHotKey() {
      axios.get('api/search/hot').then(res => {
        if (res.status === 200) {
          this.hots = res.data.result.hots
        }
      })
    },
    // 当点击热门搜索的关键词 关键词会同步在 搜索框中
    addQuery(query) {
      // 调用 searchBox 组件的 setQuery 事件 传过去的query参数为关键词
      this.$refs.searchBox.setQuery(query)
    },
    deleteOne(item) {
      this.deleteSearchHistory(item)
    },
    deleteAll() {
      this.clearSearchHistory()
    },
    onQueryChange(newquery) {
      this.query = newquery
    },
    blurInput() {
      this.$refs.searchBox.blur()
    },
    saveSearch() {
      this.saveSearchHistory(this.query)
    },
    showConfirm() {
      this.$refs.confirm.show()
    }
  }
}
</script>

<style lang="stylus" scoped>
@import '~assets/stylus/variable'
@import '~assets/stylus/mixin'
.search
  // height 'calc(100vh - %s)' % 106px
  .search-box-wrapper
    padding 20px 20px 10px 20px
    background #fffaf0
  .shortcut-wrapper
    position fixed
    top 165px
    bottom 0
    width 100%
    background #fffaf0
    .shortcut
      height 100%
      overflow hidden
      .hot-key
        margin 0 20px 20px 20px
        .title
          margin-bottom 20px
          font-size $font-size-medium
          color #757575
        .item
          display inline-block
          padding 5px 10px
          margin 0 20px 10px 0
          border 1px solid #ccc
          border-radius 6px
          font-size $font-size-medium
          color #2d3436
      .search-history
        position relative
        margin 0 20px
        .title
          display flex
          align-items center
          height 40px
          font-size $font-size-medium
          color #757575
          .text
            flex 1
          .clear
            extend-click()
            .fa-trash
              font-size 15px
              color #cccccc
  .search-result
    position fixed
    width 100%
    top 155px
    bottom 0
</style>
